I never tried the brake booster. PVC line works well for our rigs. Just go slow and don't stick the line into the can. Hold the line in your right hand and with the seafoam can in your left, slowly pour little gulps into the line.

I just seafoamed today. I used the brake booster line and it worked just as advertised. I must have had a clean engine, the only smoke I got was a little bit of trailing blue smoke at wot at 120 kph like I was driving the balls off of it. I had absolutely no oil in my intake manifold before I did this. Should be ready for Johan now.

PCV line is at the bottom left of the intake as you're looking at it head on. Can't miss it. Its marked "PCV" in white. I can't recall if you pull the line at that end or up top on the opposite end to get suction.

Did this over the weekend to prep for a tune. Used the brake booster line initially, got about 2/6th of the can in there pouring very slowly and occasionally stopping if the motor was laboring too much. Hand slipped a little and just a touch too much went in, stalling the motor. Basically let it set for 15 minutes, it started right up, drove it hard. Didnt see much/any smoke.

Since the process was halted by the premature stall, I tried going through the PCV hose - same technique, just used a funnel and poured a bit at at time (very slowly like last time...didnt take much of anything to stall it). Did another 2/6th of a can, pouring a little faster at the end per Johan's instructions to stall, which it did.

Let it sit, started right up, smoked a little, and then during the drive smoked a lot.

My question is, being an obsessive individual, is this stalling harmful to our trucks. Its in Johan's method, but isn't it basically hydrolocking? Isn't the potential for damage to the motor greater than the benefit of just slowly pouring and shutting the motor down?

Sea Foam is composed solely of three specially blended petroleum oils – each having specific functions such as lubricating, cleaning or moisture control. There are no other chemicals (not even color dyes) included in the formulation. Being of the same basic petroleum chemistry as the motor oils and gasoline you already use in your engine, Sea Foam is completely compatible with all engine components, fuels, lubricants and other additives you may have in your engine. Sea Foam will not damage gaskets or seals, and will not interact in a negative way with motor oil or fuel, or the additives used in them.

It's not like you are pouring water into the engine, rather oils. It shouldn't harm anything if done correctly.

True, but im more worried about the stalling having an impact on the components (IE bending/damage). Verdict seems to be out on the web whether stalling w/ Seafoam causes the same amount of potential damage, and like I said, Im a neurotic sum*****.

I wouldn't worry about it. The engine is at an idle when it stalls, not going to harm anything. On the other hand, if you dumped a can in way too fast while red lining the engine then that could cause a problem. The latter would be not following the directions. Follow the directions and you are good to go.

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